WHO NEEDS HBO? Why Mountain Lion Just Became the Ultimate Cord-Cutting OS. “Don’t look now, but Apple just created a formidable cord-cutting platform. The new operating system can change the way we watch video in the living room, and might even compel some users to finally cancel their cable and satellite services. Any video content that’s available for the computer can now be just as easily watched on an HDTV. All you need is a 2011 or newer Mac running Mountain Lion, and a $100 Apple TV.”